baber/WOPTO huggingface dataset:
Patent GB-954141-A (GB)
Title: A depth of field indicator for photographic cameras
IPC: G03B17/02
Filed: 1960-07-07
Abstract: 954,141. Photographic cameras; depth of field indicating mechanisms. CARL ZEISS-STIFTUNG, [trading as C.ZEISS], and COMPUR-WERKE G. m. b. H., [together trading as COMPUR-WERKEG.m.b.H. & CO. ]. July 7, 1960 [July 25, 1959], No. 28077/62. Divided out of 913, 431. Heading G2A. In a photographic camera having a depth of field indicating mechanism including two movable pointers as at 34a, 36a which co-operate with an adjustable focusing scale as at 6 and which comprise axial arms on two coaxial pointer rings as at 34, 36 each of which has a toothed peripheral section, in which said rings are geared together by a reversing pinion as at 72 mounted on a fixed pivot as at 74 and arranged to be driven by the diaphragm control means as at 38, 40, 43 of the camera, the reversing pinion is located in a plane tangential to the pointer rings and has a driving pin as at 70 in engagement with a cam slot as at 39 arranged for movement with a diaphragm control member as at 38 which is mounted coaxially with the pointer rings and is provided with manipulating means as at 40, 43. The arm 34a may be coupled to the speed setting member of a shutter housed within a stationary ring 76 to provide for exposure value setting and the diaphragm setting means or exposure value setting means may be coupled to a follow-up pointer of an exposure meter.
Patent GB-1496817-A (GB)
Title: Arrangement for securing a shaft in the correct axial position
IPC: F16B21/16
Filed: 1975-07-03
Abstract: 1496817 Bearings KIENZLE APPARATE GmbH 3 July 1975 [10 Aug 1974] 28080/75 Heading F2A A shaft 6 journalled in a bearing housing 1, is held in the housing by lugs 14, 15 provided on the inner wall of a cylindrical recess located in the housing which engage a collar 20 provided on the shaft. A second collar 22 is provided on the shaft which engages the end face of the housing, the spacing between the two collars being such that once the shaft is in place the lugs are inaccessible from the outside of the bearing. Each lug has a radially extending face which engages the collar 20 and a surface 17 inclined with respect to the axis of the recess which facilitates insertion of the shaft into the housing.
Patent GB-898380-A (GB)
Title: Radar system
Inventor: BROWN JAMES H
IPC: G01S13/18
Filed: 1960-08-12
Abstract: 898,380. Pulse radar. TEMCO AIRCRAFT CORPORATION. Aug. 12, 1960, No. 28085/60. Class 40(7). The signal-to-noise ratio of a pulsed radar system is increased by delaying received echo pulses for a period equal to the pulse repetition period of the system and then multiplying the delayed pulses with the next received echo pulses. As shown in Fig. 1, echo pulses from the receiver 12 are fed via a gate 14 (which is open except during the transmission of pulses by pulse generator 10), one input of a multiplier circuit 18, a delay device 26, providing a delay equal to the interval between the pulses of generator 10, and an amplifier 30 to a gain control circuit 32 the output of which is combined with a bias voltage in an adder 38 and supplied to a second input of the multiplier circuit 18. In this manner each echo pulse is multiplied with a previous echo pulse and results in the production of signals (applied to the display device 40) having amplitudes far in excess of multiplied noise signals since the latter are highly unlikely to have the same repetition rate as that of the echo pulses. The delay device 26 may also be employed as the frequency controlling element of generator 10, and during the production of pulses by the latter the receiver may be gated out by means of a T-R box and the output of amplifier 30 also gated out. The transmitted pulses may be subjected to a randomly variable delay (jittering) and a compensating variable delay included between gate 14 and multiplier 18 (Fig. 2, not shown). The invention may also be employed in television receivers to improve the signal to noise ratio of the synchronizing signals.
Patent GB-1013376-A (GB)
Title: Synthetic resin-bonded concrete
IPC: C04B26/02
Filed: 1962-07-23
Abstract: A synthetic resin bonded concrete comprises as aggregate, coarse grains of a porous mineral material cemented together by a synthetic resin characterized in that the grains of the porous mineral material have a tight smooth surface and the spaces between the grains are filled up by a rigid expanded synthetic resin having closed pores. The grains may have a diameter of at least 5 mm.  The porous mineral may be: lightweight concrete, crushed foamed glass, pumice stone, expanded vermiculite and perlite, or expanded clay.  The synthetic resin may be: polystyrene, polyurethane, polyvinyl chloride, polyvinyl acetate or a phenolic resin or urea resin.  In Examples (1) a mixture of hydroxyl group-containing polyesters, toluene diisocyanate and trichlorofluoromethane was added to expanded clay in a mixer, agitated and cast into a mould, (3) pre-expanded polystyrene obtained by steam treatment of polystyrene grains containing petroleum ester is added to crushed lightweight concrete in a perforated wall mould provided with means for closing it. The pre-expanded polystyrene is caused to expand further under excess pressure and completely fill up the spaces between the lightweight concrete particles.
Patent GB-757607-A (GB)
Title: Improvements in or relating to apparatus for granulating powdery, pasty, and doughy materials
IPC: B01J2/00
Filed: 1953-10-13
Abstract: 757,607. Agglomerating ores. BUSS AKT.- GES. Oct. 13, 1953 [Oct. 13, 1952], No. 28179/53. Class 82(1). [Also in Group V] Apparatus for granulating powdery, pasty or doughy materials comprises a hollow cylindrical or conical screen, at least one rotating severing device outside the screen, and a member rotating within the screen and provided with inclined surfaces conveying material axially to the screen and with surfaces so formed as to provide, in association with the inner surface of the screen, spaces wedge-shaped in cross-section of the member whereby rotation alone of the material by the member forces material out through the screen. As shown in Fig. 1 and, in cross-section, in Fig. 2, material from a hopper 2 is fed into a housing 1 by a worm 4 on the driven shaft 3 which in conjunction with a reverse worm 5 extrudes it through the perforated central part of the housing. The outer edges of the worms 4 and 5 are curved (see Fig. 2) to form the rotating wedge-shaped space, and material forced out through the screen is severed into regular lengths by a cutter 7 which may be mounted on the shaft 3, as shown, or driven independently. Figs. 5 and 6 show an alternative apparatus in which a single worm 4 supplies material to a screening drum 10 at the end of casing 1, the shaft 3 carrying a cylindrical head 11 with spiral wedge-shaped grooves 12. Two cutting blades 7 are shown ; in an alternative form rotating roller cutters may be employed, and the blades or cutters may be heated or cooled if required. The apparatus may be used in an air-free gaseous atmosphere or arranged to depend into a liquid in order to allow chemical reactions to take place.
Patent GB-599663-A (GB)
Title: Improvements in and relating to foldable or collapsible seat devices
IPC: A45B5/00
Filed: 1945-10-25
Abstract: 599,663. Ferrules. THOMPSON, A. R. Oct. 25, 1945, No. 28197. [Class 134] [Also in Group XIV] A stick seat has a reversable ferrule 3 either end of which can be screwed into the tubular stick member 1. One end carries a ground spike 15 and the other a rubber tip 21, the parts being connected by a screwed stud 17 and having a ground-plate 18 interposed.
Patent GB-944121-A (GB)
Title: Improvements in or relating to the production of sodium perborate
Inventor: MAY STANLEY KENNETH
IPC: C01B15/12
Filed: 1959-08-18
Abstract: In the production of sodium perborate tetrahydrate by the reaction of hydrogen peroxide and sodium metaborate in a mother liquor satuated with sodium perborate, the reaction is effected in the presence of a magnesium compound in an amount of 300 to 420 p.p.m. and an anionic surface active substance to the extent of not greater of 0.018 mols. per 1000 kgm. of mother liquor.  Suitable surface active substances are palmitic, stearic, lauric, myristic and oleic acid but the requisite amount of anionic surface active agent may be present in the hydrogen peroxide fed by virtue of the production of the latter by the autoxidation of alkyl or aryl substituted anthraquinols or anthraquinhydrones.  The magnesium compound employed is preferably the sulphate heptahydrate, and the addition is preferably made to the mother liquor before the hydrogen peroxide and sodium metaborate are fed thereto.  Sodium perborate product is recovered by cooling the reaction liquor (the temperature of which has risen due to the reaction), down to the initial temperature, whereupon the sodium perborate produced crystallizes out.  The bulk density of the product is lower than 0.7 grams per c.c. Specification 911,664 is referred to.
Patent GB-941546-A (GB)
Title: Inflated toys or dolls
Inventor: YOUNG CHUN-YUEN
IPC: A63H3/06
Filed: 1962-07-23
Abstract: 941,546. Toys. CENTRAL PLASTICS Ltd. July 23, 1962, No. 28272/62. Heading A6S. [Also in Division E2] In a toy or doll of the kind having an inner inflatable member f and an outer covering g, a joint permits relative movement between two parts of the toy, the joint comprising a tube h to which are secured tubular members i which abut at their inner ends and have annular flanges k at their outer ends. The flanges k are inserted into apertures in the inflatable members of the parts of the toy to be joined and cemented thereto, the parts of the members f at the joint being recessed to provide a cavity in which are located washers m, e.g. of carboard, between which the outer covering g is sandwiched and secured by means of eyelets n spaced from and surrounding the tubes i and washers o. The members f may be of polyvinyl chloride and the outer covering g of imitation fur.
Patent GB-1062964-A (GB)
Title: A space heater
IPC: F24C1/00
Filed: 1964-07-09
Abstract: 1,062,964. Space heater; air supply for gas stoves. P. KREIS. July 9, 1964 [July 11, 1963; Oct. 17, 1963], No. 28273/64. Headings F4S and F4W. A gas or liquid fuel fired heater comprises a combustion chamber 2, Fig. 1, containing at its bottom end a burner 6, characterized in that the chamber rises vertically into the enclosure to be heated and has connected to it a heating chamber 9, which downwardly deflects the flow of rising hot gases, and is thermally insulated from this flow by insulation 3. Combustion air enters orifices 7 and leaves the cylindrical combustion chamber at 4, the flow descending through compartment 9 and being disturbed by deflectors 18 and 19, and leaving via exit spigot 13 whose aperture 16 extends to the atmosphere and is screened from the incoming fresh air by baffle plate 22. External flanges 15 fix the heater to a floor. External ribs or fins (25), Fig. 2 (not shown), may be provided on the casing (10) to increase heat emission. Fig. 8 shows a heater where the heating chamber 115 is disposed to one side of the combustion chamber 101 and comprises deflecting channels 109, 110, 111 and 112 alternating with cross channels 106, 107 and 108 forming 180 degree deflectors. Air spaces 116, 117, 118 and 119 provide heat insulation between the various sections. The fresh air and waste gas orifices are placed below the space to be heated. At a level with the burner orifices there are transverse slots or gaps 128 to reduce flame noise. Fig. 4 shows the heater to be made from two parallel side walls 120 which are cut to provide the air insulation gaps, and are interconnected by cross-walls 121 to define the combustion and deflection chambers. Bolts passing through bores 122 clamp the heater parts together. Fig. 5 (not shown) shows how the heater can be made from two welded shells joined to a central portion. The waste gases may leave the heater through an aperture (113), Fig. 3 (not shown), or enter an annexe chamber 213, Fig. 8, and leave via a chimney pipe 230 through a wall or roof. The pipe 235 serves to remove any condensation which may form. The heater may be mounted on a box structure 242, Fig. 12, with the burner assembly and annexe chamber extending into the compartments separated by partition 249 (Figs. 11 and 14, not shown). An extension of the box extends through an outer wall 241. One of the burner orifices may be covered with a metal screen to form a pole for a sparking plug which will initiate combustion.
Patent GB-359155-A (GB)
Title: Improvements in or relating to return flue boilers
IPC: F22B1/18
Filed: 1930-09-22
Abstract: 359,155. Indirectly heated steam boilers. AKTIEBOLAGET GOTAVERKEN and JOHANSSON, J. E., Gothenburg, Sweden. Sept. 22, 1930, No. 28314. [Class 123 (ii).] Return-tube boilers having two or more flue tubes adapted to be heated alternatively by gaseous or liquid fuel and internal-combustion engine exhaust have means for connecting the engine exhaust pipes with one only of the flue tubes and dampers or the like are preferably arranged to cause the exhaust gases to pass successively through one flue tube with its set of smoke tubes after the other. One of the flues of each of two return-tube boilers is connected to a valve box 3 whereby either may receive exhaust gases from internalcombustion engines through conduits 1, 1<1> ; or these conduits may be connected to atmosphere through silencers 4, 4<1>. Each of the boiler flues has a burner for direct firing and in the arrangement shown the right-hand boiler is so heated, combustion products passing from the flues 71, 11<1> to the return-tubes 9<1>, 10<1> and thence to the chimney past a damper 15. Flue 7 of the lefthand boiler receives the exhaust gases which pass successively through tubes 9, 10, and flue 11 to a trunk 13 and past a damper 14 to the chimney. Each flue has a casing 18 with a chamber 20 having openings 21, 22 for introducing the burner which is mounted in a casing hinged to the outside of the casing 18. When the burner is not in use covers 23, 24 close the openings 21, 22, and these are pivotally mounted about a second hinge so as to be swung outwardly when the burner is to be inserted. The inner cover may be displaceable on a guide 29 to fit within the outer cover on swinging over a clamp 30. In a modification a boiler has three flues with valved pipes at the front connecting the first and second sets of return tubes with the second and third flues respectively to provide a series flow for the exhaust gases.
Patent GB-788338-A (GB)
Title: Improvements in or relating to inflatable life-rafts
IPC: B63C9/02
Filed: 1955-10-05
Abstract: 788,338. Inflatable rafts or dinghies. FRANKENSTEIN & SONS (MANCHESTER), Ltd., P., and SILVERSTONE, J. Oct. 5, 1956 [Oct. 5, 1955], No. 28318/55. Class 113. In a raft comprising a flexible impermeable floor outlined by an endless tube B<SP>1</SP> of similar material which is adapted on inflation to support a single person, the floor is designed with substantial fullness and inflatable only at the portion C<SP>1</SP> upon which the occupant sits, this inflatable portion not only providing effective thermal insulation for the occupant but being constructed so as to depend further below the main buoyancy chamber A than the rest C of the floor and thereby to act as a stabilizing keel. The inflatable seat portion C<SP>1</SP> is supplemented by a loose inflatable overlay G adapted to cover the remainder of the floor area. To ballast the structure " water pockets " O of flexible impermeable material are arranged at opposite sides of the main buoyancy chamber A and take the form of narrow shallow boxes each having a row of slots P in the upper part of its outer wall. Specifications 600,489 [Group VII] and 777,870 [Group XXV] are referred to in the Provisional Specification.
Patent GB-323752-A (GB)
Title: Improvements in or relating to controllers for electric motors
IPC: H01H19/12
Filed: 1928-10-03
Abstract: 323,752. Kemble, T. S. Oct. 3, 1928. Controllers.-In order to avoid sparking at the segments of a drum or like controller, each segment (or each step of a stepped segment) is provided with a small auxiliary segment with which the fixed brushes first engage, whereupon a contactor (driven synchronously with the drum by toothed wheels thereon) closes and interconnects the main and auxiliary segments until the brush fully engages the main segment when the contactor opens. As shown in Fig. 5, applied to the braking portion of a drum controller, this portion being in two axially displaced parts, the main segments A- and A+ have auxiliary segments sc - - sj and sb - - sl associated with them. When the drum is rotated from the position shown, the brushes a- and a+ are, at the first notch, engaged by the main segments A- and A+ and the resistance m, n, p is connected across the motor circuit. At the second notch, the brush b is engaged by its auxiliary segment sb and the contactor C+ closes; this connects the main segment A+ (through the brush a+ and the contactor C+ and the dotted connection shown) to the auxiliary segment so that the brush passes on to the main segment sparklessly, whereupon the contactor opens. The arrangement provides sparkless action in the reverse direction also. The constructions of the mechanical make-and-break contactors for the two-part braking portion of the drum and for the running drum, (the drums being mounted axially displaced for independent rotation on a single shaft) are shown in Figs. 2 and 3. A toothed wheel on the shaft engages a roller 10 on switch arms pivoted at 9 and, in the case of the braking controller, Fig. 2, allows the switch arm to assume the off position shown under the influence of springs 11 when the rollers rest in the hollows of the toothed wheel and, in the case of the main controller, to assume the on position shown. The means for operating a combined running and regenerative braking controller are shown in Fig. 7. The operating handle works through a gate so as to carry a sliding-gear wheel 23 into engagement with either the toothed wheel 27 which, through the tube 29 and gear-wheels 31, 32, drives the running drum 1 and its contactor star wheel 3, or with the toothed wheel 28 which similarly drives the braking drum 5.
Patent GB-241043-A (GB)
Title: Improvements in batteries of the type employed in electrotherapeutic treatment of physical ailments or disabilities
IPC: H01M10/46
Filed: 1924-11-26
Abstract: 241,043. Greville, E. R. G., and Read, F. W. Nov. 26, 1924. Cases.-A battery for electrotherapeutic purposes is provided with a switch having two sliding contacts a, b for controlling the number of cells in the circuit and for enabling the direction of the current to be reversed. The sliding contacts a, b bear upon a number of cell contacts c which are sufficiently close together to prevent interruption of the current when the contacts a, b are moved. The switching arrangement is located on a panel forming the top of a box t which contains the battery cells and an induction coil, the core n of which protrudes for adjustment purposes. The contact-breaker m of the coil and a switch r for varying the windings of the coil in use are situated on the top panel which also carries a milliammeter f having a sloping dial. The apparatus is arranged so that either a faradic or galvanofaradic current can be administered. The whole is enclosed in a removable cover when not in use.
Patent GB-702531-A (GB)
Title: Improvements in aircraft propelled by means of turbo-jet units
IPC: F02K1/54
Filed: 1950-11-21
Abstract: 702,531. Jet propulsion plant. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES (O.N.E.R.A.). Nov. 21, 1950 [Nov. 21, 1949], No. 28488/50. Class 110 (3). [Also in Group XXXIII] In a gas turbine jet propulsion engine in which air from the gas turbine compressor is led to at least one auxiliary combustion chamber feeding a forwardly directed braking jet nozzle, the auxiliary combustion chamber forms a conduit extending substantially straight from the outlet of the compressor to the inlet of the braking nozzle and adjustable valve means are provided for distributing the compressed air from the compressor outlet between, and directly into the inlets of the main and auxiliary combustion chambers. The gas turbine jet propulsion engine shown comprises a low pressure axial flow compressor 2 feeding a high pressure compressor 2a both of which are driven by a turbine 3 fed with combustion gases by an annular combustion chamber 6 supplied with air by the compressors. The jet nozzle 1 has an inner ogival cone la which is axially slidable to vary. the area of the nozzle. The discharge of the compressor 2a can be divided into two streams by a valve member 4 which is axially slidable by the pilot. One stream flows into the annular combustion chamber 6 and the other into the combustion chamber C. The valve member 4 may be provided with screw threads which co-operate with screw threads of the inner wall of the cowling 5 so that rotational movement of the member 4 will be accompanied by a corresponding axial movement. The valve member 4 may be replaced by movable deflectors movable by means of pinions in mesh with a toothed wheel coaxial with the engine. When the braking jet is out of operation, the air supply is shut-off by the valve member 4 and flaps 10 make a fluid tight joint against the cowling 5. For this purpose, the flaps 10 may be thin and elastically deformed when forced against the cowling. When the braking jet is in operation, less air is supplied to the combustion chamber 6 and water injection nozzles 8 are therefore provided. Some of the air from the compressor 2a may be taken direct to the propulsion jet in which case variation in the area of the nozzle 1 can be used to maintain the air flow through the combustion chamber 6 constant. To improve visibility, the braking jets J should diverge laterally and preferably upwardly. The braking jets may also be used to' manoeuvre the aircraft. The valve 4 may be used also for feeding conventional boundary 'layer blowing devices.
Patent GB-822806-A (GB)
Title: Improvements relating to spring wheel
IPC: B60B9/12
Filed: 1955-10-06
Abstract: 822,806. Spring wheels. GOETZEWERKE F. GOETZE A.G. Oct. 6, 1955 [Oct. 28, 1954], No. 28511/55. Class 144 (1). In a spring wheel wherein the rim is supported on a hub through the medium of two series-connected concentric rubber rings on each side of the plane of symmetry of the wheel, each ring being of greater axial width than radial thickness, lateral stability is provided by guide means which relieves at least one of the rings on each side of the wheel from axial stresses. As shown in Fig. 1, the guide means comprises annular radial discs 7 extending inwardly from the rim between annular radial discs 8 projecting from the hub 1. The larger diameter pair of rubber rings 4, 4<SP>1</SP> are connected at their axially outer ends to rings 6 attached to the rim 2 and at their inner ends to intermediate support-rings 5, 5<SP>1</SP> to which the axially outer ends of the smaller diameter pair of rubber rings 3, 3<SP>1</SP> are also connected. The rings 3, 31 have their inner ends connected to the hub discs 8 and are radially thicker than the rings 4, 41. To limit deformation of the larger rings 4, 41, buffers 9, 91 are mounted on the outer peripheries of the rings 5, 5<SP>1</SP>. Fig. 2 shows an alternative arrangement wherein the guiding means comprises a floating annular disc 16 to which the intermediate support rings 15, 151 are bolted and which is guided between projecting hub discs 10. In this case the rim 11 is permitted high-frequency oscillations which are absorbed by the larger diameter rings 12, 121.